Laura Poitras, who recorded the Edward Snowden leak in Citizenfour, returns with her latest documentary, Risk. The film has become a severe threat to my freedom, and I'm forced to treat it accordingly," wrote WikiLeaks founder Julian Assange in a message to Oscar-winning documentary maker Laura Poitras (Citizenfour) that she reads in voice-over near the end of Risk. The movie chronicles her increasingly tangled six-year professional relationship with